Cylindrical drier.



P.- A. BUNDLE. GYLINDRIOAL DRIER.

nruoumn 21mm APR. 21, 1910.

084. Patented Nov. 12, 1912.

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P. A; RUN DLE.

UYLINDRIGAL DRIER.

APPLICATION FILED APR. 27, 1910.

Patented Nov. 12,1912.

7 SHEETS-SHEET 2.

iiiiii P. A. BUNDLE. GYLINDBIOAL DRIER. APPLICATION IILED APLTL 1910.

Patefited Nov. 12,1912.

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F. A. BUNDLE. GYLINDBIG-AL DRIER. urmouxon FILED APR. 27, 1910.

Patented Nov. 12,1912.

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F. A; BUNDLE.

GYLINDRIOAL DRIER. urmongon FILED APR.27, 1910.

Patent ed Nov. 12, 1912.

7 SHEETS-SHEET 6.

F. A. BUNDLE.

- OYLINDBIGAL DRIER.

APPLICATION rum) A1127, 1910.

1,044,084. Patented Nov. 12, 1912..

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'lul i F. A. BUNDLE; GYLINDBIUAL DBIBR. APPLICATION FILED APR.27, 1910.

1,045,084. 7 Patented Nov. 12,1912.

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men. sr T s FRED A. BUNDLE, 0F, HARVEY, ILLINOIS,

.VPATENT orrron.

ASSIGNOR T0 WHITING FOUNDRY EQUIT- MENT COMPANY, OF HARVEY, ILLINOIS, A CORPORATION ILLINOIS.

GYLINDRICAL DRIER.

Specification of Letters Patent.

To all uihom it may concern:

Be it known that I, Fnno A RU1 -Ini.E, a

citizen of the United States, residing at Harvey, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Cylindrical Driers, of which the following is a specification.

This invention relates to cylindrical driers for use in drying rock, earth or mixtures without its being liable to get out of order.

The invention consists in the combination of parts hereafter specified and a connection between the cylinder proper and the dust chamber or breeching preventing the entrance of cold air, also in a combination of diaphragms and their feeding devices within the shell adapted to assist in carrying the material worked by the machine through the machine without its seriously sticking or otherwise clogging, this not-withstanding variations in degree of dampness of the material; also in the use of a removable and replaceable end section of the cylinder adjacent to the furnace or fire box so constructed that its end is protected somewhat from the direct heat of the furnace heat; also a novel construction of fire box roof permitting replacement thereof; also in details of construction to be hereafter more fully described and claimed.

Referring to the drawings, Figure 1 is a side view of the fire box or furnace end of apparatus illustrating the preferred form of this invention. Fig- 2 shows the left hand view ofthe device, or portion shown in Fig. 1, being the entire construction placed adj acent to and connecting the right hand end of the part shown in Fig. 1. Fig. 3 is a detail .side view partially in section andpartially broken away exterior of the portion of the cylinder where the line 77, Fig. 1, is taken. Fig. 8 is a detailsectional view on the line 88, Fig. 1. Fig. 9 is a detail view of one of the bungs of the roof of the fire box taken on the line 9-9, Fig. 1. Fig. 10 is a detail View of the same roof bung on the line 10 -10, Fig. 9. Fig. 11 is a central sectional detail view of the interior of the cylinder immediately at the left of where the section .line 44, Fig. 2 is taken and'Fig. 12 is a right of said section line. Fig. .13 is a sectional view of the'head end of the cylinder. Fig. 14 is a plan of the parts of Fig. 6.

The device broadly stated consists in a fire box 14 having grate bars-16 anda discharge opening 18 entering oneend 19' of a long cylinder 20 adapted to be rotated by mechanism to be hereafter described; The discharge end of the cylinder 21 entering a chute 24 having at its upper end a hopper 26 in which the material to be dried is placed for the purpose of passing into and down the inclined cylinder, the material in so doing coming into contact with the hot gases and to a limited extent the flames produced by the fire upon the grate 16, said material thus being dried and finally running down the incline 28 provided for the purpose. The cylinder 20 is provided with two exteriorrings 30 and 32 each of them mounted upon suitable rollers 34 journaled at 36 upon bearing castings 28 adjustable crosswise of the cylinder from the base plates 40 under the I control of adjusting screws 42 in the ordinary manner.

The invention is equally useful in con nection with devices old in the art and frequently used for drying fish in which the feeding and firing takes place at the same end of thecylinder. .Upon' the surface of the cylinder is also mounted a gear 44 meshing with a pinion 46 and other intermediate gearing 50 connected to any suitable power adapted to give approximately continuous rotation, as is desired. 'Near the forward or feeding end of the cylinder is a circular band or ring 52 on which is slidably mounted another ring 54, lying in a plane at approximately right angles to the cylinder and vslidable relative to the plate 52. This plate 54 lies adjacent to the said wall 56 of the dust chamber 22 and is held in contact therei Patented Nov. 12, 1912. Applicationfiled April 27, 1910. Serial No. 557,996.

similar interior view immediately at the I dust chamber 22' and itself entered by a with, particularly duringthe rotation of the cylinder by the plunger heads 58 controlled by the springs 60 inclosing the piston rod 62 located between the piston heads 58 and the stationary block mounting 64. The result of this construction is that the springs 6O and parts operatively connected to them keep the plate 54 in contact'with the wall 56 and also with the cylinder, thereby preventing the entrance of cold air through the opening which would otherwise be left between the cylinder and the box 22.

The interior of the cylinder immediately adjacent to the feeding end is provided with a plurality of angularly placed angle bars 'or equivalent members 66 adapted to, as the cylinder rotates, stir up the material to be dried and to feed it along onto the longitudinally placed angle irons 68 placed in the portion of the top immediately adjacent thereto. In practice these angular members 66 on. the cylinder, of say for illustration six-feet in diameter, occupy a longitudinal distance of approximately three feet and the members 68 occupy a longitudinal distance of approximately forty-three feet. Aside from these projecting members 68 this portion of the cylinder is clear of mechanical construction. About eight feet from the right hand or feeding end of the illustrative.

cylinder above referred to, the interior of the cylinder is provided with a cross section such as is illustrated in Fig. 4, comprising a box shaped member 70 connected to the cylinder walls proper by radial members 72, thus forming in the interior of the cylinder a central tube 74 of approximately square cross section through which some of the hot gases are intended to pass and four other passageways 76 of irregular cross section through which the gaspasses in one direction and the material to be driedpasses in the opposite direction. Particular attention is here called to the oblique angles 78 formed between the walls of the blocks 70 and the radial members 72, which angles tend to prevent sticking of material thereto, which sticking is further prevented by the fact that the material in the passageway 76 is being-rotated ata distance from the center of the cylinder and is at such a distance therefrom that there is suflicient centrifugal force to throw the material off from the walls of the. passageway 76 and thus keep it agitated andpresent the particles to the actionof the hot gases. The stirrin' up of the material or rock to be dried while passing through these passageways 76 is assisted A by the angular members 80 as well as by members 68 heretofore described.

In order to insure the deliveryof the material to be dried into the passageways 76 the forward ends of the plates 72 are cut away in the. angular lines, as best seen in Fig. 12, the angularity of said lines extendlng from the center toward the sides of the cylinder and in the direction in which the material is passing through the cylinder. This cross section construction just described is someneeded while the material to be dried possesses a certain amount of moisture, it is, therefore, only continued along the cylinder of the illustrative size given for about thirteen feet after which the sect-ion illustrated in Fig. 5 is provided, consisting of radial members 84-, with projecting angular memthat the angular stirring inembersrmay be omitted and the section consists of extra heavy radial members 92 and the removable lining members 94 secured to the interior of the device by bolts 96 or other suitable devices. Attention is called to the fact that these members 94 areof such a thickness that, as illustratedinFig. 7, they come out flush with and protect the ends 100 of the material of the cylinder 20, so that the hot gases may pass along the interior portion 94 and intothe interior of the next section 6., passing. the end 100 thereof without getting unduly in contact with said end 100 and tending to melt it off.

In the prior devices of this kind it has been found that when the rotation of the cylinder is stopped for any purpose while the fire in the fire box is burning,'the heat is liable .to cause sagging of the overhanging end of the cylinder until it comes in contact with the thimble protecting the opening in the Wall of the furnace with the result that when it is attempted to start up the machine the cylinder is apt to damage the furnace wall. In order to prevent this sticking temporary supporting blocks 102 are provided, mounted upon screws 104 set in suitable bearings 106. When the device is temporarily stopped the operator applies .what expensive to make and as it is .only' a wrench to the screws 108 thus setting the blocks 102 up against the wall of the cylinder, thus supporting it in its proper axial position until such time as it is ready to start when the operator moves the screws in the opposite direction thereby permitting power to be applied to the'cylinder to readilystartit up without danger of damage being done. As heretofore stated, the end 19 of the cylinder. enters an' opening or recess 110 in the fire box and in line with the opening of the fire box so that gases and hot air from the fire box may pass into the cylinder for the purposes set forth. In

order to protect this, end 19 of the cylinder the exterior circumference 112 of this opening 18 of the fire box is made smaller than the cylinder so that it protects the end 19 of the cylinder in the same wa that the cast iron plates, protect the ad acent end 100 in the manner heretofore described.

The fire box roof is constructed, as illustrated in detail on Figs. 1, 9 and 10, of a plurality of parallel bungs 114 having hinged end members 116 adapted to bodetachably secured in the position shown in Fig. 9 by the bolts 120 to hold thefire brick of the roof 122 in place. When these bolts 120 are released the end members 116 swing about the hinges 124 thereby releasin all ofthe brick 122, permitting them to rop out and allowing others to be put in their places. These bungs are each self contained and canbe readily lifted by means of the handle member 126 into and out of the positiorr shown in Fig. 1.

Having thus described the invention, the

claims are ways for the material to be dried are formed between the tro x and the wall of the cylinder;

2. A cylinder of the class describedcomprising at its feed end a plurality of circumferential, angularly placed, feed members; then a longitudinal por ion comprising a plurality-of radialstirring members.

running lengthwise of the cylinder; then a portion comprising a center box member and radial members c9imecting it .to the walls of the cylinder and finally a portion in which the section consists of radial members meet-ing at the center of the cylinder; 7

said various kinds of stirring members being proportioned in length to the dampness of the material entering the device and to its relative dryness as it passes through the device. a 3. In'mechanism of the class described in combination with a cylinder, means for rotating the'same, and a fire box opening into the cylinder, means adjacent to the fire box end of the cylinder adapted tobe moved between two different positions in one of which it supports the end of the cylinder and in the other clears it. Y

4. A cylinder of the class described, comprising at its feed end a plurality of circumferential angularly placed feed members; then a longitudinal portion comprising 'a plurality of radial stirring members running lengthwise of the cylinder, and having finally near its opposite end a portion in which the section consists of radial members meeting at the center of the cylinder; said various kinds of stirringmembers being proportioned in length to the dampness of the material entering the device, and to its relative dryness as it'passes through the device.

In-witness whereof, I have hereunto subscribed my name in the presence of 'two witnesses.

FRED A.' BUNDLE. Witnesses:

G. R. BRANDON, A. T. WHITING. 

